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Dynamic coupling of ferrihydrite transformation and associated arsenic desorption/redistribution mediated by sulfate-reducing bacteria

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Journal of Environmental Sciences 2024年第1期135卷 39-50页

作者： Wenjing Zhou Huiyan Zhu Shiwen Hu Bowei Zhang Kun Gao Zhi Dang Chongxuan Liu State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of EducationSouth China University of TechnologyGuangzhou 510006China

sulfate-reducing bacteria play an important role in the geochemistry of iron(oxyhydr)oxide and arsenic(As)in natural environments;however,the associated reaction processes are yet to be fully understood.In this study,batch experiments coupled with geochemical,spectroscopic,microscopic,and thermodynamic analyses were conducted to investigate the dynamic coupling of ferrihydrite transformation and the associated As desorption/redistribution mediated by Desulfovibrio vulgaris(D.vulgaris).The results indicated that D.vulgaris could induce ferrihydrite transformation via S^(2-)-driven and direct reduction processes.In the absence of SO_(4)^(2-),D.vulgaris directly reduced ferrihydrite,and As desorption and re-sorption occurred simultaneously during the partial transformation of ferrihydrite to magnetite.The increase in SO_(4)^(2-)loading promoted the S^(2-)-driven reduction of ferrihydrite and accelerated the subsequent mineralogical transformation.In the low and medium SO_(4)^(2-)treatments,ferrihydrite was completely transformed to a mixture of magnetite and mackinawite,which increased the fraction of As in the residual phase and stabilized As.In the high SO_(4)^(2-)treatment,although the replacement of ferrihydrite by only mackinawite also increased the fraction of As in the residual phase,22.1%of the total As was released into the solution due to the poor adsorption affinity of As to mackinawite and the conversion of As^(5+)to As^(3+).The mechanisms of ferrihydrite reduction,mineralogy transformation,and As mobilization and redistribution mediated by sulfate-reducing bacteria are closely related to the surrounding SO_(4)^(2-)loadings.These results advance our understanding of the biogeochemical behavior of Fe,S,and As,and are helpful for the risk assessment and remediation of As contamination.

关键词： sulfate-reducing bacteria Arsenic Ferrihydrite Transformation Redistribution

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Stress corrosion cracking behavior of buried oil and gas pipeline steel under the coexistence of magnetic field and sulfate-reducing bacteria

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Petroleum Science 2024年第2期21卷 1320-1332页

作者： Jian-Yu He Fei Xie Dan Wang Guang-Xin Liu Ming Wu Yue Qin College of Petroleum Engineering Liaoning Petrochemical UniversityFushun113001LiaoningChina Key Laboratory of Oil and Gas Storage and Transportation Technology in Liaoning Province Fushun113001LiaoningChina State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing100084China PipeChina West East Gas Pipeline Company Shanghai200120China

Magnetic field and microorganisms are important factors influencing the stress corrosion cracking(SCC)of buried oil and gas pipelines. Once SCC occurs in buried pipelines, it will cause serious hazards to the soil environment. The SCC behavior of X80 pipeline steel under the magnetic field and sulfate-reducing bacteria(SRB) environment was investigated by immersion tests, electrochemical tests, and slow strain rate tensile(SSRT) tests. The results showed that the corrosion and SCC sensitivity of X80 steel decreased with increasing the magnetic field strength in the sterile environment. The SCC sensitivity was higher in the biotic environment inoculated with SRB, but it also decreased with increasing magnetic field strength, which was due to the magnetic field reduces microbial activity and promotes the formation of dense film layer. This work provided theoretical guidance on the prevention of SCC in pipeline steel under magnetic field and SRB coexistence.

关键词： Magnetic field sulfate-reducing bacteria Film layer Stress corrosion cracking Oil and gas pipelines

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Mitigating corrosion of deposit-covered carbon steel in solution containing sulfate-reducing bacteria by purging nitrogen

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Journal of Iron and Steel Research(International) 2023年第9期30卷 1879-1887页

作者： Zheng-rong Ye Jie Yang Zheng-bin Wang Xiang Zhou Wei-dong Jiang Ran Yi Xiao-dong Cui Zhi-hong Zhao Research Institute of Petroleum Exploration and Development PetroChinaBeijing 100083China CAS Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016LiaoningChina School of Materials Science and Engineering University of Science and Technology of ChinaHefei 230026AnhuiChina

The corrosion behavior of a carbon steel covered by sand deposits in the solution containing sulfate-reducing bacteria(SRB)under nitrogen purging conditions was studied by electrochemical measurements and surface analyses,aiming at clarifying the mitigation effects of nitrogen purging on SRB-involved under-deposit corrosion.The electrochemical results show that the variation trend of polarization resistance with immersion time is unchanged,but the corrosion current density is the lowest in the presence of SRB and deposits under nitrogen purging conditions,as compared to that without purging nitrogen,which are confirmed by the cross-sectional corrosion morphology observation after removing the sand deposits.Moreover,it is found that there are no positive synergistic effects between SRB and deposits on corrosion under nitrogen purging conditions,corresponding to the corrosion mitigation.Such mitigation on corrosion can be attributed to the less amount of SRB-produced H2S exhausted by purging nitrogen,which is supported by X-ray photoelectron spectrometry analyses.Therefore,purging nitrogen to the solution could be a practically effective way to mitigate the corrosion of deposit-covered carbon steels in SRB-containing solutions.

关键词： Carbon steel Deposit sulfate-reducing bacteria Nitrogen purging Corrosion mitigation

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The effect of applied potential on stress corrosion cracking of X80 pipeline steel in acidic soil containing sulfate-reducing bacteria

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Science China(Technological Sciences) 2023年第10期66卷 2837-2849页

作者： HE JianYu XIE Fei ZHAO Yang GUO DaCheng WANG Dan LI JunChi College of Petroleum Engineering Liaoning Petrochemical UniversityFushun 113001China Key Laboratory of Oil and Gas Storage and Transportation Technology in Liaoning Province Fushun 113001China Liaohe Oilfield Oil and Gas Gathering and Transmission Company Panjin 124000China Northeast Natural Gas Sales Center Sinopec Natural Gas BranchShenyang 110100China

Electrochemical experiments,slow strain rate tensile testing(SSRT),and scanning electron microscopy were used to investigate the effect of various applied potentials on the stress corrosion cracking(SCC)of X80 pipeline steel in acidic soil containing sulfate-reducing bacteria(SRB).The results demonstrated that when the anodic potential was applied,X80 steel exhibited sensitivity to SCC,which was attributed to anodic dissolution.The SCC sensitivity initially decreased,but then increased with a negative shift in the applied potential.At-1200 mV,SCC was the most sensitive,which corresponded to the substantial cathodic polarisation and toxic impact of SRB,which increased the risk of hydrogen embrittlement.At-850 mV,the SCC sensitivity was the lowest because cathodic polarisation suppressed anodic dissolution.The experimental results can contribute to the prevention and management of SCC in operational pipelines.

关键词： applied potential acid soil SCC sulfate-reducing bacteria

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Methylmercury and sulfate-reducing bacteria in mangrove sediments from Jiulong River Estuary,China

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Journal of Environmental Sciences 2011年第1期23卷 14-21页

作者： Hao Wu Zhenhua Ding Yang Liu Jinling Liu Haiyu Yan Jiayong Pan Liuqiang Li Huina Lin Guanghui Lin Haoliang Lu Key Laboratory of Ministry of Education for Coastal and Wetland Ecosystems and School of Life Sciences Xiamen University Xiamen 361005 China State Key Laboratory of Environmental Geochemistry Institute of Geochemistr) Chinese Aeademy of Sciences Guiyang 550002 China Key Laboratory of Nuclear Resources and Environment East China Institute of Technology Minist~ of Education Nanchang 330013 China

Estuaries are important sites for mercury （Hg） methylation, with sulfate-reducing bacteria （SRB） thought to be the main Hg methylators. Distributions of total mercury （THg） and methylmercury （MeHg） in mangrove sediment and sediment core from Jiulong River Estuary Provincial Mangrove Reserve, China were determined and the possible mechanisms of Hg methylation and their controlling factors in mangrove sediments were investigated. Microbiological and geochemical parameters were also determined. Results showed that SRB constitute a small fraction of total bacteria （TB） in both surface sediments and the profile of sediments. The content of THg, MeHg, TB, and SRB were （350 ± 150） ng/g, （0.47 ± 0.11） ng/g, （1.4× 10^011 ± 4.1 × 10^9） cfu/g dry weight （dw）, and （5.0× 10^6 d： 2.7 × 10^6） cfu/g dw in surficial sediments, respectively, and （240 ± 24） ng/g, （0.30 ± 0.15） ng/g, （1.9 × 10^11 ± 4.2 × 10^9） cfu/g dw, and （1.3 × 10^6 ± 2.0 × 10^6） cfu/g dw in sediment core, respectively. Results showed that THg, MeHg, TB, MeHg/THg, salinity and total sulfur （TS） increased with depth, but total organic matter （TOM）, SRB, and pH decreased with depth. Concentrations of MeHg in sediments showed significant positive correlation with THg, salinity, TS, and MeHg/THg, and significant negative correlation with SRB, TOM, and pH. It was concluded that other microbes, rather than SRB, may also act as main Hg methylators in mangrove sediments.

关键词： mercury methylmercury sediment mangrove sulfate-reducing bacteria

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Corrosion Behavior of Cupronickel Alloy in Simulated Seawater in the Presence of sulfate-reducing bacteria

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Acta Metallurgica Sinica(English Letters) 2017年第12期30卷 1201-1209页

作者： Yanyan Song Hongwei Shi Jun Wang Fuchun Liu En-Hou Han Wei Ke Ganxin Jie Jun Wang Haijun Huang CAS Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China Department of Chemistry Northeastern UniversityShenyang 110004 China State Key Laboratory of Environmental Adaptability for Industrial Products National Electric Apparatus Research Institute Co. Ltd Guangzhou 510633 China

The corrosion behavior of cupronickel alloy immersed in the simulated seawater in or without the presence of sulfate-reducing bacteria （SRB） was studied. The results of scanning electronic microscopy and electrochemical impedance spectra reveal that corrosion of the sample immersed in the simulated seawater with SRB was more serious than that immersed in the simulated seawater without SRB. The atomic force microscopy images show that after immersion for 15 days, the surface roughness of the sample in the simulated seawater with SRB was higher than that of the sample in the simulated seawater without SRB. The analysis of confocal laser scanning microscopy indicates that the average depth of the pits on the surface of the sample in the simulated seawater with SRB was almost twice deeper than that of the sample in the simulated seawater without SRB.

关键词： Microbiologically influenced corrosion sulfate-reducing bacteria Cupronickel alloy Confocal laser scanning microscopy EIS

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Inhibition of sulfate-reducing bacteria influenced corrosion on hydrophobic poly(dimethylsiloxane)coatings

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Journal of Materials Science & Technology 2020年第17期52卷 198-206页

作者： Innocent O.Arukalam C.N.Njoku Lihui Yang Baorong Hou Ying Li Corrosion and Protection Division Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Shenyang National Laboratory for Materials Science Northeastern UniversityShenyang 110819China Department of Polymer and Textile Engineering Federal University of TechnologyP.M.B.1526 Owerri Nigeria Key Laboratory of Marine Environmental Corrosion and Bio-fouling Institute of OceanologyChinese Academy of SciencesQingdao 266071China Open Studio for Marine Corrosion and Protection Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Advanced Functional Materials/Corrosion Research Group Africa Centre of Excellence in Future Energies and Electrochemical Systems(ACE-FUELS)Federal University of Technology Owerri(FUTO)Nigeria

sulfate-reducing bacteria(SRB)has been pointed out as one of the causative agents of microbial induced corrosion in the marine environment.To address this problem,novel strategies are being experimented as against the earlier methods which have been banned due to their toxic effects on useful aquatic lives.Thus,the aim of this study was to investigate the effect of non-toxic perfluorodecyltrichlorosilane(PFDTS)on resistance of hydrophobic poly(dimethylsiloxane)/phosphoric acid-treated zinc oxide(PDMS/PA-treated ZnO)coatings to SRB-induced biofouling and corrosion.The surface features of the coatings before and after exposure to SRB/NaCl solution were analyzed by scanning electron microscopy(SEM).Wettability of the coatings before and after exposure was also measured.The interaction of SRB with the coatings was investigated by FTIR spectroscopy.The resistance performance of the modified coatings against SRB-induced corrosion was monitored by electrochemical impedance spectroscopy(EIS).The EIS measurements revealed that 0.20 g PFDTS-based coating displayed highest corrosion resistance with impedance modulus of 6.301×10^10 after 15 d of exposure to SRB/NaCl medium.The results were corroborated by surface and chemical interaction analyses,and thus,indicate that 0.20 g PFDTSmodified PDMS/PA-treated ZnO coating has potentials for excellent SRB-induced corrosion resistance and anti-biofouling performance.

关键词： Corrosion Hydrophobic coating Perfluorodecyltrichlorosilane Poly(dimethylsiloxane) sulfate-reducing bacteria

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Effect of sulfate-reducing bacteria on hydrogen permeation and stress corrosion cracking behavior of 980 high-strength steel in seawater

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Journal of Materials Science & Technology 2021年第33期92卷 109-119页

作者： Meiying Lv Xuchao Chen Zhenxin Li Min Du Key Laboratory of Marine Chemistry Theory and Technology Ministry of EducationCollege of Chemistry and Chemical EngineeringOcean University of ChinaQingdao 266100China

980 high-strength steel has been widely used in marine engineering structures due to its high strength and toughness.However,it is easily affected by the harsh environmental conditions(such as the presence of sulfate-reducing bacteria,SRB),leading to the risk of stress corrosion cracking(SCC).In this paper,the effects of SRB and its metabolites on hydrogen permeation and SCC mechanism of 980 steel in seawater solution were investigated by slow strain rate tensile test,scanning electron microscope,Xray energy spectroscopy,Raman spectroscopy and Devanathan-Stachurski double electrolytic cell.Results demonstrated that the SCC susceptibility of 980 steel was promoted in the presence of SRB,which was related to the cultivation time of the bacteria.When SRB were cultivated for 3 d and 6 d,the SCC mechanism was controlled by hydrogen-induced cracking(HIC);while the cultivation time extended to 11 d,the SCC of 980 steel was under the combined effect of the anodic dissolution(AD) and HIC mechanism.When cultivated for 16 d,the SCC of 980 steel was caused by the dominant AD.Both the SRB accelerated hydrogen permeation under cathodic depolarization process and SRB assisted AD(pitting corrosion)played an enhancing role in promoting SCC susceptibility of 980 steel.

关键词： Stress corrosion cracking sulfate-reducing bacteria Microbiologically influenced corrosion 980 High-strength steel Seawater

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Treatment of Agate Dyeing Wastewater Using an Immobilized Gel Mixture with Nano-Fe_(3)O_(4) sulfate-reducing bacteria

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Journal of Renewable Materials 2021年第11期9卷 2015-2032页

作者： Xuying Guo Guoliang Jiang Saiou Fu Zhiyong Hu Junzhen Di Yanrong Dong Ying Li College of Science Liaoning Technical UniversityFuxin123000China College of Construction Engineering Liaoning Technical UniversityFuxin123000China College of Mining Engineering Liaoning Technical UniversityFuxin123000China Liaoning Fourth Geological Team Limited Liability Company Fuxin123000China

To solve the problems of high Cr^(6+),Cr^(3+),SO_(4)^(2-)and H+concentrations,pollution and processing costs associated with agate dyeing industrial drainage,we prepared an immobilized gel mixture for the treatment of such drainage on the basis of microbial immobilization technology.The immobilized gel mixture was composed of sulfate-reducing bacteria(SRB),corn cob,and nano-Fe_(3)O_(4)(nFe_(3)O_(4)).We used a single-factor experiment to determine the optimal dose of each matrix component.We analyzed the mechanism underlying the treatment of agate dyeing wastewater with an immobilized gel mixture by X-ray diffraction and scanning electron microscopy detection.The results of the single-factor test showed that the best treatment was obtained under the following conditions for each matrix component:SRB mass percentage of 30%,nFe_(3)O_(4) dose of 3%,and corn cob mesh size of 100 and dose of 3%.On this basis,we conducted an L9(34)orthogonal experiment to determine the optimal proportion of each matrix component.The results showed that the best treatment was obtained when the gel mixture met the following conditions:SRB mass percentage of 40%,nFe_(3)O_(4) dose of 4%,and corn cob dose of 1%and mesh size of 100.Accordingly,the SO_(4)^(2-),Cr^(6+)and Cr^(3+)removal rates from the agate dyeing drainage were 70.54%,84.75%,and 73.80%,respectively;the total Fe and chemical oxygen demand releases were 1.086 mg·L^(-1)and 1104 mg·L^(-1),respectively;and the pH was 6.27.The gel mixture had the best treatment effect on agate dyeing wastewater under this composition ratio.

关键词： Agate dyeing drainage corn cob immobilized gel mixture nano-Fe_(3)O_(4) orthogonal test sulfate-reducing bacteria

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Molecular phylogenetic analysis of sulfate-reducing bacteria from deep sediment layers of the tropical West Pacific warm pool

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Acta Oceanologica Sinica 2006年第3期25卷 98-107页

作者： LUO Zhuhua YE Dezan HUANG Xiangling Key Laboratory of Marine Biogenetic Resource of State Oceanic Administration （ SOA） Third Institute of Oceanography SOA Xiamen 361005 China

The diversity of sulfate-reducing bacteria （SRB） from deep layers of deep-sea sediments [ more than 2 m bsf （below seafloor） ] of two sites （WO1 -3 and WPO1 -4） in a tropical West Pacific warm pool region was characterized by using molecular phylogenetic analysis. The results of culture-independent samples demonstrated that the dominant clones from both sites were related to Grampositive spore forming genus, Desulfotomaculum, which accounted for 36.8% of all the sequencing clones from Site WP01 - 3 and 62.8% from Site WP01 -4. However, the other SRB group which was generally reported to be predominant in the deep-sea sediments of other regions, δ- subclass of the proteobacteria was found to be in very low percentages. Therefore, it could be speculated that there existed a unique chemical environment in the deep-sea sediment of this warm pool region. When comparing the Desulfotomaculum sp. related sequences from both sites, it was revealed that though the Desulfotomaculum-like sequences from Site WP01 -3 were more diverse than those from Site WP01 -4, all these sequences from both sites showed high similarity and formed a new phylogenetically homogeneous cluster in the Desulfotomaculum genus which had never been reported before. Successful enrichment of SRB was only achieved from samples of Site WP01 -4 and the sequence analysis of culture-dependent samples further confirmed the dominance of Desulfotomaculum genus. But Desulfotomaculum-related sequences from culture-dependent and culture-independent samples belonged to two different clusters respectively. This difference showed the choice of cultivation to the microorganisms.

关键词： sulfate-reducing bacteria deep sediment tropical West Pacific warm pool molecular phylogenetic analysis

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